:root{
  --bg:#f8f5fc; --surface:#ffffff; --surface-2:#f1ebf9; --ink:#231a33; --ink-2:#584c6c; --muted:#7d7290;
  --line:#e3d9f0; --purple:#6b3fb8; --purple-d:#532e95; --purple-l:#ece3fa;
  --math:#2f7de1; --sci:#1f9d6b; --read:#e0802a; --ela:#d6457a;
  --ok:#1f8a5c; --ok-bg:#e5f5ec; --warn:#a2560f; --warn-bg:#fdf0e1; --err:#b42343; --err-bg:#fde8ec;
  --r:16px; --r-sm:10px;
  --display:'Fredoka','Nunito',system-ui,sans-serif; --body:'Nunito',system-ui,sans-serif;
  --shadow:0 1px 2px rgba(45,20,90,.06),0 6px 20px rgba(45,20,90,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.65 var(--body);-webkit-font-smoothing:antialiased}
a{color:var(--purple)} a:hover{color:var(--purple-d)}
code,kbd{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em;background:var(--surface-2);padding:.1em .4em;border-radius:6px}
kbd{border:1px solid var(--line);border-bottom-width:2px}
.skip{position:absolute;left:-999px;top:8px;background:var(--purple);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid #a985ea;outline-offset:2px;border-radius:6px}

/* top bar */
.topbar{position:sticky;top:0;z-index:30;background:rgba(248,245,252,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1240px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:12px 24px}
.brand{font:700 22px/1 var(--display);color:var(--purple);text-decoration:none;white-space:nowrap}
.brand span{color:var(--ink-2);font-weight:500}
.search{flex:1;max-width:520px;margin-left:auto;display:flex;align-items:center;gap:8px;background:var(--surface);border:1.5px solid var(--line);border-radius:999px;padding:8px 14px;color:var(--muted)}
.search:focus-within{border-color:var(--purple)}
.search input{border:0;outline:0;background:transparent;font:inherit;font-size:15px;color:var(--ink);width:100%;min-width:0;padding:2px 0;box-shadow:none!important;border-radius:0}
.menu-btn{display:none;background:none;border:0;color:var(--ink);padding:6px;border-radius:8px;cursor:pointer}

/* layout */
.layout{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;padding:0 24px}
.sidebar{position:sticky;top:72px;align-self:start;max-height:calc(100vh - 72px);overflow:auto;padding:28px 0 40px}
.nav-group{margin-bottom:22px}
.nav-label{font:700 12px/1 var(--body);letter-spacing:.08em;text-transform:uppercase;color:var(--purple);margin:0 0 8px 12px}
.sidebar a{display:block;padding:7px 12px;border-radius:10px;color:var(--ink-2);text-decoration:none;font-size:15px;font-weight:600}
.sidebar a:hover{background:var(--surface-2);color:var(--ink)}
.sidebar a.active{background:var(--purple-l);color:var(--purple-d)}
main{padding:28px 0 80px;min-width:0;max-width:820px}

/* sections */
.doc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:36px 40px;margin-bottom:24px;box-shadow:var(--shadow)}
.doc[hidden]{display:none}
.eyebrow{margin:0 0 6px;font-weight:800;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--purple)}
h1,h2,h3{font-family:var(--display);line-height:1.2;color:var(--ink);margin:0}
h1{font-size:clamp(30px,4.2vw,42px);font-weight:600;max-width:20ch}
h2{font-size:30px;font-weight:600;margin-bottom:12px}
h3{font-size:19px;font-weight:600}
h3.sub{margin:28px 0 10px}
.lead{font-size:19px;color:var(--ink-2);max-width:62ch;margin:16px 0 0}
.doc>p{max-width:66ch}

.hero{background:linear-gradient(160deg,#fff 0%,#f3ecfc 100%)}
.quickstart{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:28px}
.qs-card{display:flex;flex-direction:column;gap:4px;padding:16px;border-radius:14px;background:var(--surface);border:1.5px solid var(--line);text-decoration:none;color:var(--ink);transition:transform .15s,border-color .15s}
.qs-card:hover{transform:translateY(-2px);border-color:var(--purple);color:var(--ink)}
.qs-card strong{font-family:var(--display);font-weight:600;font-size:17px;line-height:1.25}
.qs-card span:last-child{font-size:14px;color:var(--ink-2);line-height:1.45}
.qs-num{width:30px;height:30px;border-radius:50%;background:var(--purple);color:#fff;display:grid;place-items:center;font:700 15px var(--display);margin-bottom:6px}
.subjects{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{font-weight:700;font-size:14px;padding:5px 12px;border-radius:999px;color:#fff}
.chip-math{background:var(--math)}.chip-sci{background:var(--sci)}.chip-read{background:var(--read)}.chip-ela{background:var(--ela)}

/* steps */
.steps{list-style:none;counter-reset:s;padding:0;margin:22px 0 0}
.steps>li{counter-increment:s;position:relative;padding:0 0 22px 56px}
.steps>li::before{content:counter(s);position:absolute;left:0;top:-2px;width:36px;height:36px;border-radius:50%;background:var(--purple-l);color:var(--purple-d);font:700 17px/36px var(--display);text-align:center}
.steps>li:not(:last-child)::after{content:"";position:absolute;left:17px;top:40px;bottom:4px;width:2px;background:var(--line)}
.steps>li p{margin:4px 0 0;color:var(--ink-2)}
.steps>li h3+p{margin-top:4px}
.steps.compact>li{padding-bottom:14px}
.steps.compact>li p{margin-top:5px;color:var(--ink)}
.checklist{margin:8px 0 0;padding-left:20px;color:var(--ink-2)}
.checklist li{margin:4px 0}
.ui{display:inline-block;font-weight:700;font-size:.92em;background:var(--surface-2);color:var(--purple-d);padding:0 .5em;border-radius:6px;border:1px solid var(--line);line-height:1.6}
.badge{display:inline-block;font-weight:700;font-size:.82em;background:var(--warn-bg);color:var(--warn);padding:0 .55em;border-radius:999px}

.callout{margin-top:20px;padding:14px 18px;border-radius:12px;background:var(--surface-2);border-left:4px solid var(--purple);font-size:16px;color:var(--ink-2)}
.callout strong{color:var(--ink)}
.callout.tip{background:#eaf4ff;border-color:var(--math)}
.callout.warn{background:var(--warn-bg);border-color:var(--read)}

/* tabs */
.tabs{display:flex;gap:6px;margin-top:20px;flex-wrap:wrap;border-bottom:1.5px solid var(--line)}
.tab{font:700 15px var(--body);background:none;border:0;padding:10px 14px;color:var(--ink-2);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-1.5px}
.tab[aria-selected="true"]{color:var(--purple-d);border-color:var(--purple)}
.tabpanel{padding-top:8px}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.mini-card{padding:18px;border-radius:14px;background:var(--surface-2)}
.mini-card p{margin:6px 0 0;color:var(--ink-2);font-size:16px}

.defs{margin:18px 0 0;display:grid;gap:10px}
.defs>div{display:grid;grid-template-columns:180px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.defs dt{font-weight:800}
.defs dd{margin:0;color:var(--ink-2)}
.lvl{display:inline-block;font-size:13px;font-weight:700;padding:1px 9px;border-radius:999px;margin-right:4px}
.lvl-new{background:#eee9f5;color:#5e5470}.lvl-mid{background:#fff1d9;color:#94540c}.lvl-good{background:var(--ok-bg);color:var(--ok)}

/* accordion */
.accordion{margin-top:16px;border-top:1px solid var(--line)}
.accordion details{border-bottom:1px solid var(--line)}
.accordion summary{cursor:pointer;list-style:none;padding:16px 36px 16px 0;font-weight:700;position:relative}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{content:"+";position:absolute;right:6px;top:12px;font:600 24px var(--display);color:var(--purple)}
.accordion details[open] summary::after{content:"–"}
.accordion details p{margin:0 0 16px;color:var(--ink-2)}

/* forms */
.form{margin-top:22px;display:grid;gap:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field label{font-weight:700;font-size:15px}
.req{color:var(--err)}
input,select,textarea{font:inherit;font-size:16px;color:var(--ink);background:#fff;border:1.5px solid var(--line);border-radius:var(--r-sm);padding:11px 13px;width:100%;min-width:0}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--purple);box-shadow:0 0 0 3px var(--purple-l)}
input[type=file]{padding:9px;background:var(--surface-2)}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--err)}
.field .msg{color:var(--err);font-size:14px;font-weight:600}
.btn{font:700 16px var(--body);border-radius:999px;padding:12px 22px;border:1.5px solid transparent;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap}
.btn-primary{background:var(--purple);color:#fff;justify-self:start}
.btn-primary:hover{background:var(--purple-d);color:#fff}
.btn-primary:disabled{opacity:.6;cursor:wait}
.btn-ghost{background:var(--surface);color:var(--purple-d);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--purple)}
.form-error{margin:0;background:var(--err-bg);color:var(--err);padding:10px 14px;border-radius:10px;font-weight:600}
.form-ok{margin:0;background:var(--ok-bg);color:var(--ok);padding:10px 14px;border-radius:10px;font-weight:700}
.success{margin-top:22px;padding:24px;border-radius:14px;background:var(--ok-bg);border:1.5px solid #b9e3cb}
.success h3{color:var(--ok)}
.success p{margin:8px 0 16px}
.ticket-id{font-family:var(--display);font-size:22px;color:var(--ink);letter-spacing:.02em}

.lookup{margin-top:30px;padding-top:4px;border-top:1px solid var(--line)}
.lookup-row{display:grid;grid-template-columns:1fr 1.4fr auto;gap:10px}
.lookup-result{margin-top:12px}
.status-card{padding:14px 16px;border-radius:12px;background:var(--surface-2)}
.status-card p{margin:4px 0 0;color:var(--ink-2);font-size:15px}
.pill{display:inline-block;font-size:13px;font-weight:800;padding:2px 10px;border-radius:999px;background:var(--purple-l);color:var(--purple-d)}
.pill.s-resolved,.pill.s-shipped{background:var(--ok-bg);color:var(--ok)}
.pill.s-open,.pill.s-new{background:#eaf4ff;color:#1d5fb3}
.pill.s-planned,.pill.s-in-progress,.pill.s-under-review{background:#fff1d9;color:#94540c}
.pill.s-closed,.pill.s-not-planned{background:#eee9f5;color:#5e5470}

/* idea board */
.board{margin-top:34px;border-top:1px solid var(--line)}
.board-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.board-head select{width:auto;margin-top:16px;padding:8px 12px;font-size:15px}
.idea-list{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:10px}
.idea{display:grid;grid-template-columns:64px 1fr;gap:14px;padding:14px;border:1.5px solid var(--line);border-radius:14px;background:#fff}
.vote{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border:1.5px solid var(--line);border-radius:12px;background:var(--surface);cursor:pointer;font:700 16px var(--display);color:var(--ink-2);padding:6px 0;min-height:60px}
.vote svg{width:18px;height:18px}
.vote[aria-pressed="true"]{background:var(--purple);border-color:var(--purple);color:#fff}
.idea h4{margin:0;font:600 17px/1.3 var(--display)}
.idea p{margin:4px 0 8px;color:var(--ink-2);font-size:15px;overflow-wrap:anywhere}
.idea-meta{display:flex;flex-wrap:wrap;gap:6px;font-size:13px}
.tag{font-weight:700;padding:1px 9px;border-radius:999px;background:var(--surface-2);color:var(--ink-2)}
.empty{padding:22px;text-align:center;color:var(--muted);border:1.5px dashed var(--line);border-radius:14px}
.skeleton{height:84px;border-radius:14px;background:linear-gradient(90deg,var(--surface-2),#f8f4fd,var(--surface-2));background-size:200% 100%;animation:sh 1.2s infinite}
@keyframes sh{to{background-position:-200% 0}}

.no-results{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 24px}
.foot{text-align:center;padding:24px 0;color:var(--ink-2)}
.foot p{margin:4px 0}.muted{color:var(--muted);font-size:14px}
mark{background:#ffe79a;color:inherit;border-radius:3px}

/* responsive */
@media (max-width:980px){
  .layout{grid-template-columns:1fr;gap:0;padding:0 16px}
  .menu-btn{display:inline-flex}
  .sidebar{position:fixed;top:var(--hdr,66px);left:0;bottom:0;width:min(300px,86vw);max-height:none;align-self:auto;height:calc(100dvh - var(--hdr,66px));background:var(--surface);border-right:1px solid var(--line);padding:20px 12px;transform:translateX(-102%);transition:transform .2s;z-index:25;box-shadow:var(--shadow)}
  .sidebar.open{transform:none}
  main{max-width:none}
  .quickstart{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .topbar-inner{padding:10px 14px;gap:10px}
  .brand span,.hide-sm{display:none}
  .brand{font-size:19px}
  .search{padding:7px 12px}
  .doc{padding:24px 20px;border-radius:14px}
  h2{font-size:25px}
  .lead{font-size:17px}
  .grid-2,.two-col,.lookup-row{grid-template-columns:1fr}
  .defs>div{grid-template-columns:1fr;gap:2px}
  .steps>li{padding-left:48px}
  .btn-primary{justify-self:stretch}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
.lvl-help{background:#fde8ec;color:#a3243f}
.two-col{grid-template-columns:repeat(2,1fr)}

/* ---------- landing & routing ---------- */
[hidden]{display:none!important}
.nav-home{display:flex!important;align-items:center;gap:8px;font-weight:800!important;color:var(--ink)!important;margin-bottom:14px}
.nav-bottom{margin-top:8px;padding-top:18px;border-top:1.5px solid var(--line)}
.nav-cta{display:flex!important;align-items:center;gap:10px}
.dot{width:9px;height:9px;border-radius:50%;flex:none}
.dot-idea{background:var(--read)}.dot-help{background:var(--purple)}.dot-status{background:var(--sci)}
.sidebar a[aria-current="page"]{background:var(--purple-l);color:var(--purple-d)}

.landing .hero{margin-bottom:32px}
.landing-h{font-size:22px;margin:8px 0 14px}
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:36px}
.topic-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);border-top:4px solid var(--tc,var(--purple))}
.t-start{--tc:var(--purple);--tc-soft:var(--purple-l)}
.t-family{--tc:var(--ela);--tc-soft:#fdedf5}
.t-learn{--tc:var(--math);--tc-soft:#e7f2fe}
.t-account{--tc:var(--sci);--tc-soft:#e7f9f3}
.topic-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:12px}
.topic-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--tc-soft);color:var(--tc);flex:none}
.topic-icon svg{width:22px;height:22px}
.topic-head h3{font-size:20px}
.topic-head p{margin:2px 0 0;color:var(--ink-2);font-size:15px;line-height:1.45}
.topic-links{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.topic-links li{border-bottom:1px solid var(--line)}
.topic-links li:last-child{border-bottom:0}
.topic-links a{display:flex;flex-direction:column;padding:10px 26px 10px 4px;text-decoration:none;color:var(--ink);position:relative;border-radius:8px}
.topic-links a::after{content:"›";position:absolute;right:8px;top:50%;transform:translateY(-50%);font:600 22px var(--display);color:var(--tc)}
.topic-links a:hover{background:var(--surface-2)}
.topic-links strong{font-weight:700;font-size:16px}
.topic-links span{font-size:14px;color:var(--muted);line-height:1.4}

.help-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:12px}
.help-card{display:flex;flex-direction:column;gap:4px;padding:20px;border-radius:var(--r);text-decoration:none;color:var(--ink);border:1.5px solid var(--line);background:var(--surface);transition:transform .15s,border-color .15s}
.help-card:hover{transform:translateY(-2px);border-color:var(--hc);color:var(--ink)}
.hc-idea{--hc:var(--read);--hc-soft:#fff1e3}.hc-help{--hc:var(--purple);--hc-soft:var(--purple-l)}.hc-status{--hc:var(--sci);--hc-soft:#e7f9f3}
.hc-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--hc-soft);color:var(--hc);margin-bottom:8px}
.hc-icon svg{width:22px;height:22px}
.help-card strong{font:600 18px var(--display)}
.help-card span{font-size:15px;color:var(--ink-2);line-height:1.45}
.help-card em{font-style:normal;font-weight:800;font-size:14px;color:var(--hc);margin-top:auto;padding-top:10px}

.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px;color:var(--muted);margin-bottom:14px}
.crumb a{font-weight:700;text-decoration:none}
.article-foot{margin-top:30px;padding-top:20px;border-top:1px solid var(--line)}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pn-link{display:flex;flex-direction:column;padding:12px 16px;border:1.5px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink);font-weight:700;font-size:15px}
.pn-link small{font-weight:700;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.pn-link:hover{border-color:var(--purple);color:var(--ink)}
.pn-next{text-align:right}
.still{margin:16px 0 0;color:var(--ink-2);font-size:15px}
.muted-line{margin:18px 0 0;color:var(--ink-2);font-size:15px}
.lookup{border-top:0;margin-top:18px}

.results{margin-bottom:24px}
.results-title{font-size:22px;margin:4px 0 14px}
.results-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.results-list a{display:flex;flex-direction:column;gap:2px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow)}
.results-list a:hover{border-color:var(--purple);color:var(--ink)}
.results-list small{font-weight:800;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--purple)}
.results-list strong{font:600 18px var(--display)}
.results-list span{font-size:15px;color:var(--ink-2)}

@media (max-width:980px){.help-row{grid-template-columns:1fr 1fr 1fr}}
@media (max-width:760px){.topic-grid,.help-row{grid-template-columns:1fr}}
@media (max-width:640px){.pn{grid-template-columns:1fr}.pn-next{text-align:left}.topic-card{padding:18px}}
@media (min-width:981px){
.sidebar{padding:20px 0 24px}
.sidebar a{padding:5px 12px;font-size:14.5px}
.nav-group{margin-bottom:14px}
.nav-home{margin-bottom:10px}
.nav-bottom{padding-top:14px}
}
.top-link{white-space:nowrap;font-weight:700;font-size:15px;color:var(--ink-2);text-decoration:none;padding:8px 10px;border-radius:10px}
.top-link:hover{background:var(--surface-2);color:var(--ink)}
.reply{margin-top:12px;padding:12px 14px;background:var(--surface);border-left:3px solid var(--purple);border-radius:10px}
.reply small{display:block;font-weight:800;font-size:12px;color:var(--purple);letter-spacing:.03em;margin-bottom:4px}
.reply p{margin:0;font-size:15px;color:var(--ink-2)}